trap-manager: Remove reqid parameter from install() and change return type

Reqids for the same traffic selectors are now stable so we don't have to
pass reqids of previously installed CHILD_SAs.  Likewise, we don't need
to know the reqid of the newly installed trap policy as we now uninstall
by name.

src/libcharon/sa/ike_sa.c

@@ -2035,8 +2035,7 @@ METHOD(ike_sa_t, reestablish, status_t,
 					break;
 				case ACTION_ROUTE:
 					charon->traps->install(charon->traps, this->peer_cfg,
-										   child_sa->get_config(child_sa),
-										   child_sa->get_reqid(child_sa));
+										   child_sa->get_config(child_sa));
 					break;
 				default:
 					break;

src/libcharon/sa/ikev1/tasks/quick_delete.c

@@ -154,7 +154,7 @@ static bool delete_child(private_quick_delete_t *this, protocol_id_t protocol,
 				case ACTION_ROUTE:
 					charon->traps->install(charon->traps,
 									this->ike_sa->get_peer_cfg(this->ike_sa),
-									child_cfg, child_sa->get_reqid(child_sa));
+									child_cfg);
 					break;
 				default:
 					break;

src/libcharon/sa/ikev2/tasks/child_delete.c

@@ -374,8 +374,8 @@ static status_t destroy_and_reestablish(private_child_delete_t *this)
 					break;
 				case ACTION_ROUTE:
 					charon->traps->install(charon->traps,
-							this->ike_sa->get_peer_cfg(this->ike_sa), child_cfg,
-							reqid);
+									this->ike_sa->get_peer_cfg(this->ike_sa),
+									child_cfg);
 					break;
 				default:
 					break;

src/libcharon/sa/trap_manager.c

@@ -183,9 +183,8 @@ static bool dynamic_remote_ts(child_cfg_t *child)
 	return found;
 }
 
-METHOD(trap_manager_t, install, uint32_t,
-	private_trap_manager_t *this, peer_cfg_t *peer, child_cfg_t *child,
-	uint32_t reqid)
+METHOD(trap_manager_t, install, bool,
+	private_trap_manager_t *this, peer_cfg_t *peer, child_cfg_t *child)
 {
 	entry_t *entry, *found = NULL;
 	ike_cfg_t *ike_cfg;
@@ -197,7 +196,7 @@ METHOD(trap_manager_t, install, uint32_t,
 	linked_list_t *proposals;
 	proposal_t *proposal;
 	protocol_id_t proto = PROTO_ESP;
-	bool wildcard = FALSE;
+	bool result = FALSE, wildcard = FALSE;
 
 	/* try to resolve addresses */
 	ike_cfg = peer->get_ike_cfg(peer);
@@ -213,7 +212,7 @@ METHOD(trap_manager_t, install, uint32_t,
 	{
 		other->destroy(other);
 		DBG1(DBG_CFG, "installing trap failed, remote address unknown");
-		return 0;
+		return FALSE;
 	}
 	else
 	{	/* depending on the traffic selectors we don't really need a remote
@@ -223,7 +222,7 @@ METHOD(trap_manager_t, install, uint32_t,
 			 * which is probably not what users expect*/
 			DBG1(DBG_CFG, "installing trap failed, remote address unknown with "
 				 "dynamic traffic selector");
-			return 0;
+			return FALSE;
 		}
 		me = ike_cfg->resolve_me(ike_cfg, other ? other->get_family(other)
 												: AF_UNSPEC);
@@ -250,7 +249,7 @@ METHOD(trap_manager_t, install, uint32_t,
 		this->lock->unlock(this->lock);
 		other->destroy(other);
 		me->destroy(me);
-		return 0;
+		return FALSE;
 	}
 	enumerator = this->traps->create_enumerator(this->traps);
 	while (enumerator->enumerate(enumerator, &entry))
@@ -277,11 +276,10 @@ METHOD(trap_manager_t, install, uint32_t,
 			this->lock->unlock(this->lock);
 			other->destroy(other);
 			me->destroy(me);
-			return 0;
+			return FALSE;
 		}
 		/* config might have changed so update everything */
 		DBG1(DBG_CFG, "updating already routed CHILD_SA '%s'", found->name);
-		reqid = found->child_sa->get_reqid(found->child_sa);
 	}
 
 	INIT(entry,
@@ -295,7 +293,7 @@ METHOD(trap_manager_t, install, uint32_t,
 	this->lock->unlock(this->lock);
 
 	/* create and route CHILD_SA */
-	child_sa = child_sa_create(me, other, child, reqid, FALSE, 0, 0);
+	child_sa = child_sa_create(me, other, child, 0, FALSE, 0, 0);
 
 	list = linked_list_create_with_items(me, NULL);
 	my_ts = child->get_traffic_selectors(child, TRUE, NULL, list);
@@ -327,14 +325,13 @@ METHOD(trap_manager_t, install, uint32_t,
 		this->lock->unlock(this->lock);
 		entry->child_sa = child_sa;
 		destroy_entry(entry);
-		reqid = 0;
 	}
 	else
 	{
-		reqid = child_sa->get_reqid(child_sa);
 		this->lock->write_lock(this->lock);
 		entry->child_sa = child_sa;
 		this->lock->unlock(this->lock);
+		result = TRUE;
 	}
 	if (found)
 	{
@@ -345,7 +342,7 @@ METHOD(trap_manager_t, install, uint32_t,
 	this->installing--;
 	this->condvar->signal(this->condvar);
 	this->lock->unlock(this->lock);
-	return reqid;
+	return result;
 }
 
 METHOD(trap_manager_t, uninstall, bool,

src/libcharon/sa/trap_manager.h

@@ -38,11 +38,9 @@ struct trap_manager_t {
 	 *
 	 * @param peer		peer configuration to initiate on trap
 	 * @param child 	child configuration to install as a trap
-	 * @param reqid		optional reqid to use
-	 * @return			reqid of installed CHILD_SA, 0 if failed
+	 * @return			TRUE if successfully installed
 	 */
-	uint32_t (*install)(trap_manager_t *this, peer_cfg_t *peer,
-						 child_cfg_t *child, uint32_t reqid);
+	bool (*install)(trap_manager_t *this, peer_cfg_t *peer, child_cfg_t *child);
 
 	/**
 	 * Uninstall a trap policy.